基質中の分散染料の溶媒和

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タイトル別名
  • THE SOLVATION OF DISPERSE DYE IN THE SUBSTRATE
  • キシツチュウ ノ ブンサン センリョウ ノ ヨウバイワ

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抄録

The solvation energy of three disperse dyes in poly (ethylene terephthalate), Mylar#50 (ΔHsolv.f.)was calculated for ethylene glycol, perclene and water from the energy diagram of dyeing process proposed by T. G. Majury. The heat of solution (ΔHsol.s.) and the heat of dyeing (ΔHdye.) were obtained from the measurements of the solubility of the dyes and from the dyeing isotherms of the substrate, respectively.<br>We could draw the following conclusions from ΔHsolv.f. values. 1) The stabilization of dye molecule in the substrate depend upon the solvation by the substrate polymer chain (25-30 kcal) more than that of solvent (2-5 kcal). 2) ΔHsolv.f. is little influenced by the large change in the polarity of solvents, water to perclene. However, ΔHsolv.f. for ethylene glycol having polar and nonpolar groups is fairly larger than those for water and perclene. 3) ΔHsolv.f. decreases to about 1/10 for water and perclene and to about 1/5 for ethylene glycol, compared with the solvation energy of dye molecule in the solution (ΔHsolv.) 4) There is no relationship between ΔHslfw.f. and the distribution constant of dye between the solution and the substrate.

収録刊行物

  • 繊維学会誌

    繊維学会誌 35 (4), T161-T164, 1979

    社団法人 繊維学会

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